CN202159672U

CN202159672U - Solar cell silicon chip with low cost

Info

Publication number: CN202159672U
Application number: CN 201120288398
Authority: CN
Inventors: 陈一鸣
Original assignee: WENZHOU SUOLE NEW ENERGY TECHNOLOGY CO LTD
Current assignee: WENZHOU SUOLE NEW ENERGY TECHNOLOGY CO LTD
Priority date: 2011-08-10
Filing date: 2011-08-10
Publication date: 2012-03-07
Anticipated expiration: 2021-08-10

Abstract

The utility model relates to a solar cell silicon chip with low cost, which comprises a baseplate, wherein a silicon layer is arranged on the baseplate, a transition silicon plate and a metal thin film layer are arranged between the baseplate and the silicon layer, a printed circuit is arranged on the baseplate or the silicon layer, the silicon layer is a porous silicon layer, and the thickness of the porous silicon layer is 100-750mum. The solar cell silicon chip has the benefit of saving material for manufacturing the silicon chip; furthermore, the porous silicon layer is utilized, so that the utilization rate of silicon of a solar cell is higher and the high-purity silicon for manufacturing the solar cell is lower in cost and simple in structure.

Description

The silicon chip of solar cell that cost is low

Technical field

The utility model relates to a kind of silicon chip, especially relates to a kind of silicon chip of solar cell.

Background technology

The silicon materials consumption of existing silicon chip is too big; The utilance of general silicon materials has only about 50%, and silicon chip generally can only reach about 200 microns because that technical limitations can not be cut is very thin; And the actual needed silicon wafer thickness of solar cell only needs about 50 microns; Thick like this silicon chip can cause the utilance of silicon of solar cell very low, thereby the cost of HIGH-PURITY SILICON that is used to make solar cell is very high, and silicon chip is the part of the maximum cost of solar cell; Therefore the utilance of low silicon is the high main cause of solar cell price that present silicon chip is made, thereby has influenced popularizing of solar cell.

The utility model content

The utility model provides the low silicon chip of solar cell of a kind of cost, and it mainly is that to solve the silicon materials consumption of existing in prior technology silicon chip too big, and the utilance of general silicon materials has only the problem about 50%; The utility model has also solved thick silicon chip and can cause the utilance of silicon of solar cell very low, thereby is used to make the very high technical problem of cost of the HIGH-PURITY SILICON of solar cell.

To achieve these goals, the utility model solution technical scheme that its technical problem adopted is:

The silicon chip of solar cell that cost is low comprises base plate, and described base plate is provided with silicon layer, is provided with transition silicon plate and metal film layer between base plate and the silicon layer, and base plate or silicon layer are provided with printed circuit, and described silicon layer is a porous silicon layer,

Porous silicon layer thickness is 100-750um.

The beneficial effect of the utility model: practice thrift to make the material of silicon chip, and utilize porous silicon layer, make that the utilance of silicon of solar cell is higher, thereby the cost of HIGH-PURITY SILICON that is used to make solar cell is lower, simple in structure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the A-A cross-sectional view of Fig. 1 of embodiment 1;

Fig. 3 is the A-A cross-sectional view of Fig. 1 of embodiment 2.

Embodiment

The silicon chip of solar cell that cost is low; Comprise base plate 1, described base plate 1 is provided with silicon layer 2, is provided with transition silicon plate 4 and metal film layer 5 between base plate 1 and the silicon layer 2; Base plate or silicon layer are provided with printed circuit 3; Described silicon layer 2 is a porous silicon layer, and its thickness is 100-750um, and described base plate 1 is the low-purity silicon base plate.

Embodiment 1: the low silicon chip of solar cell of a kind of cost of this example, like Fig. 1, Fig. 2, Jie's base plate 1 is arranged, and base plate is the low-purity silicon base plate.Base plate is provided with silicon layer 2, and silicon layer is a porous silicon layer, and its thickness is 500um.Base plate 1 or silicon layer 2 are provided with printed circuit 3.Be provided with transition silicon plate 4 between base plate 4 and the silicon layer 2.

During use, the utility model solar cell of packing into can be used.

Embodiment 2: the low silicon chip of solar cell of a kind of cost of this example, like Fig. 1, Fig. 3, a base plate 1 is arranged, and base plate is the low-purity silicon base plate.Base plate is provided with silicon layer 2, and silicon layer is a porous silicon layer, and its thickness is 500um.Base plate or silicon layer are provided with printed circuit 3.Be provided with metal film layer 5 between base plate and the silicon layer.

During use, the utility model solar cell of packing into can be used.

Claims

1. the low silicon chip of solar cell of cost comprises base plate (1), it is characterized in that; Described base plate (1) is provided with silicon layer (2); Be provided with transition silicon plate (4) and metal film layer (5) between base plate (1) and the silicon layer (2), base plate or silicon layer are provided with printed circuit (3), and described silicon layer (2) is a porous silicon layer.

2. the low silicon chip of solar cell of cost as claimed in claim 1 is characterized in that porous silicon layer thickness is 100-750um.